TABLE 3.
Characteristic (N with data) | All patients (n = 158) |
---|---|
Demographics | |
Male (152) | 90 (59.2%) |
Mean age, years (152) | 9.5 ± 7.5 |
Molecular mechanism | |
Missense | 49 (31.0%) |
Nonsense | 38 (24.1%) |
Frameshift | 32 (20.3%) |
Splicing | 7 (4.4%) |
In-frame insertion | 1 (0.6%) |
Intragenic deletion | 22 (13.9%) |
Translocations | 6 (3.8%) |
Intragenic duplication | 3 (1.9%) |
Phenotype | |
Neurodevelopmental abnormalities | |
Developmental delay (157) | 157 (100%) |
No words for speech (152) | 66 (43.4%) |
Autistic behavior (145) | 29 (20.0%) |
Dental anomalies (137) | 135 (98.5%) |
Sialorrhea (109) | 96 (88.1%) |
Facial dysmorphism (127) | 107 (84%) |
Low BMD (46) | 33 (71.7%) |
Feeding difficulties (130) | 89 (68.5%) |
Hypotonia (114) | 67 (58.8%) |
Sleeping difficulties (109) | 55 (50.5%) |
Abnormal neuroimaging (108) | 50 (46.3%) |
Sleeping difficulties (145) | 66 (45.5%) |
Cleft palate (154) | 70 (45.5%) |
Strabismus (143) | 51 (35.7%) |
Agitation/aggressive (145) | 45 (31.0%) |
Growth retardation (144) | 44 (30.6%) |
Clinical seizures (143) | 29 (20.3%) |
Hyperactivity (145) | 29 (20.0%) |